A scientist’s position within this ranking is determined by their D-index (Discipline H-index), a refined metric that exclusively considers publications and citation counts within the specific examined discipline, in this case, Earth Science. This approach ensures that the ranking reflects disciplinary impact rather than overall scientific contribution.
Scope and Criteria of the Ranking
This ranking was derived from an examination of 279,971 scientist profiles consolidated from a broad array of bibliometric data sources, covering multiple disciplines. Specifically, for Earth Science, 12 scientists were identified and rigorously evaluated. To qualify for inclusion, a researcher’s D-index had to meet a minimum threshold of 30, and a majority of their tier publications were required to be centered in the Earth Science domain.
In addition to bibliometric considerations, scientists’ awards and notable achievements in Earth Science were integral factors in qualification. The D-index thresholds used to identify leading researchers are scaled in increments of 10, reflecting the estimated total number of scholars within each discipline, while ensuring inclusion of the top 1% of leading experts.
Additionally, the methodology mandates that the proximity between a scientist’s general H-index and their D-index remains within 30%, maintaining disciplinary focus without significant divergence from overall impact.
Verification and Validation Practices
The researchers behind this ranking recognize that raw bibliometric data alone cannot fully capture the multifaceted output of scholars. For this reason, all scientist profiles were manually verified and cross-referenced with publications from a wide array of trustworthy academic and scientific sources, safeguarding the accuracy and integrity of the ranking.
While the number of papers published in high-impact journals and prominent conference proceedings does not directly influence a researcher’s position in the Research.com ranking, such metrics serve as valuable secondary indicators of a scientist’s contributions to their specific field.
Overall, the ranking positions are established exclusively using each researcher’s D-index, based on authoritative data from OpenAlex and CrossRef—among the most prominent and widely recognized bibliometric databases accessible to the global research community.
For an in-depth understanding of the methodology employed, we encourage readers to visit our methodology page.
Research.com’s Mission and Vision
The creation of this ranking aligns with Research.com’s overarching mission to motivate researchers, institutions, companies, and policymakers worldwide to closely examine emerging trends and trajectories of leading scientific experts. By providing transparent and meticulously validated data, we strive to facilitate recognition of top-tier researchers within specific disciplines, countries, and academic or research institutions.
Our goal is to foster a more connected scientific community where knowledge of who the leading experts are catalyzes collaborations, funding decisions, and policy-making for advancing science globally.
